On August 13, 2026, Senior U.S. District Judge B. Lynn Winmill struck down key provisions of Idaho’s near-total abortion ban in a landmark federal ruling.
The decision in Seyb v. Members of the Idaho Board of Medicine holds that the ban is unconstitutional where it prohibits abortions necessary to protect a patient’s health, not just their life.
Judge Winmill also entered an injunction barring enforcement of the ban in those circumstances, delivering an immediate practical consequence alongside the constitutional finding.
The ruling is the first federal district court decision since Dobbs v. Jackson Women’s Health Organization to hold that the U.S. Constitution affirmatively protects a right to health-preserving abortion.
The case was brought by Dr. Stacy Seyb, a maternal-fetal medicine specialist who has practiced at St. Luke’s Health System in Boise for nearly three decades.
Dr. Seyb challenged Idaho’s Defense of Life Act, which permits abortion only to save the mother’s life or in cases of rape or incest.
He argued the law forced him to either deny medically necessary care to high-risk obstetric patients or face criminal prosecution and loss of his medical licence.
Judge Winmill grounded the constitutional right to a health-preserving abortion in the history-and-tradition test set forth by the Supreme Court in Washington v. Glucksberg.
The court found this right “deeply rooted” in common-law protections for physicians acting in good faith, state abortion statutes dating to 1868, and 19th-century medical sources recognising lawful health-preserving procedures.
The ruling further connected the right to the common-law principle of self-defence, reasoning that the law has historically excused even homicide committed to prevent serious bodily harm.
The court held that Idaho’s exclusion of self-harm from its death-of-the-mother exception also violates the Equal Protection Clause of the Fourteenth Amendment.
Judge Winmill wrote that “[i]t is an affront to human dignity to bar pregnant women from receiving life-saving care on the basis that the threat comes from a mental health condition rather than a physical health condition.”
The court declined, however, to expand exceptions for pregnancies involving fatal or severe fetal anomalies, holding that Idaho’s prohibition in those cases satisfies rational basis review.
Idaho Attorney General Raúl Labrador has announced an immediate appeal of the ruling and is expected to seek a stay of the district court’s injunction pending that appeal.
The Seyb ruling arrives three months before Idaho voters decide Proposition 1, a citizen-initiated measure that would establish a statutory right to abortion up to fetal viability.
Idahoans United for Women and Families gathered over 100,000 signatures — well above the 70,725 required — to place Proposition 1 on the November ballot.
If Proposition 1 passes, Idaho’s near-total ban would be effectively superseded by a new statutory framework, potentially rendering much of the Seyb litigation moot.
The ruling builds on a broader pattern of post-Dobbs constitutional litigation in Idaho, including the Ninth Circuit’s December 2024 decision in Matsumoto v. Labrador, which struck down part of the state’s abortion trafficking statute on First Amendment grounds.
Providers in states with near-total bans including Texas, Louisiana, Tennessee, and Missouri are watching the case closely, as a Ninth Circuit affirmance would create circuit precedent applicable to similar challenges across the region.
Health systems and licensed providers operating in states with restrictive abortion laws face simultaneous exposure under criminal law, licensing law, civil liability statutes, and evolving federal constitutional frameworks, and should consult legal counsel accordingly.